MCQ Questions for Class 8 Maths Introduction To Graphs Quiz 5

The line graph represent the net sales rate of Apple company from the year

$2003-2013$ . Find the increase in sales rate during

$2005-2007$ .

0%
$16,000$ millions
0%
$8,000$ millions
0%
$26,000$ millions
0%
$32,000$ millions

Explanation

The difference between the two sales rate of the year

$2005-2007$ is:

$32,000 - 16,000 = 16,000$
So, the increase in sales rate from the year

$2005-2007 = 16,000$ millions

How many watches were sold in all 5 months?

0%
160
0%
180
0%
175
0%
170

Explanation

Total Sales= Addition of sales individually in each month.

Total Sale

$=20+50+20+60+30=180$

In which pair of years was the number of candidates qualified, the same?

0%
1995 and 1997
0%
1995 and 2000
0%
1998 and 1999
0%
Data inadequate

The figure above shows the cost of joining and buying music from a music subscription service. What does the y-intercept of the line most likely represent?

0%
The cost per song
0%
The cost to join the service
0%
The cost of buying 20 songs
0%
The cost of 20 subscriptions to the service

Explanation

When no. of songs are 0 then cost is 20

$. This means the cost of joining the service is 20$ .

Hence, the y-intercept (i.e. 20) of the line represent the cost to join the service.

So, the answer is option (B).

2063760_493896_ans_8524580c8694437295258b86168e7a40.png

What was the percentage increase in imports from 1997 to 1998 ?

0%
72
0%
56
0%
28
0%
Data inadequate

The horizontal line in the graph is called ______.

0%
X-axis
0%
Y-axis
0%
Line
0%
None of these

The line graph shows the number of storybooks Armaan read in the last

$4$ months of a year.
The number of storybooks that he read in October as a fraction of the total number of storybooks read is

0%
$\dfrac {1}{12}$
0%
$\dfrac {3}{4}$
0%
$\dfrac {1}{2}$
0%
$\dfrac {5}{12}$

Explanation

Total number of storybooks read

$= 4 + 2 + 10 + 8 = 24$
Number of storybooks read in October

$= 2$
Therefore, required fraction is

$\dfrac {2}{24}$

$=$

$\dfrac {1}{12}$

In which of the given states, the total production of rice and wheat is the least?

0%
W.B.
0%
M.P.
0%
Maharashtra
0%
Haryana

Explanation

State	Production of Rice	Production of Wheat
U.P.	7 Million	15 Million
W.B.	8 Million	1 Million
M.P.	4 Million	4 Million
Maharashtra	3 Million	2 Million
Haryana	2 Million	5 Million

$\therefore$ Least total production

$= 5$ Million which is in Maharashtra

Hence, the answer is Maharashtra.

The vertices of a triangle are

$A({x}_{1},{x}_{1}\tan{\alpha}),B({x}_{2},{x}_{2}\tan{\beta})$ and

$C({x}_{3},{x}_{3}\tan{\gamma})$ . If the circumcentre of the triangle

$ABC$ coincides with the origin and

$H(a,b)$ be its orthocentre then

$\cfrac{a}{b}$ is equal to

0%
$\dfrac{x_1+x_2+x_3}{x_1\tan\alpha+x_2\tan\beta+x_3\tan\gamma}$
0%
$\dfrac{x_1+x_2+x_3}{x_1\cot\alpha+x_2\cot\beta+x_3\cot\gamma}$
0%
$\dfrac{-x_1+x_2+x_3}{-x_1\tan\alpha+x_2\tan\beta+x_3\tan\gamma}$
0%
None of these

Study the graph and answer the following questions.
How many less burgers were sold on Thursday than on Monday?

0%
$50$
0%
$20$
0%
$35$
0%
$10$

Explanation

Number of burgers sold on Thursday

$= 30$
Number of burgers sold on Monday

$= 50$
Required difference

$= 50 - 30$

$= 20$

The line graph shows the amount of water used by Jamie from March to July. Express the amount of water used in June as a fraction of the total amount of water used.

0%
$\displaystyle \frac{3}{14}$
0%
$\displaystyle \frac{1}{7}$
0%
$\displaystyle \frac{2}{7}$
0%
$\displaystyle \frac{3}{140}$

Explanation

Total amount of water used =

$20+15+30+40+35=140$ L

Amount of water used in june=

$40$ L

Amount of water used in June to the total amount of water=

$\dfrac{40}{140}=\dfrac{2}{7}$

A histogram is a type of data represantion.

0%
True
0%
False

Histogram is a type of _____.

0%
Geometric diagram
0%
Frequency diagram
0%
Both A and B
0%
Arithmetic line graph

________ is a set of rectangles with bases as the intervals between class
boundaries (along X-axis) and with are as proportional to the class frequency.

0%
Bar diagram
0%
Component bar diagram
0%
Histogram
0%
Multiple bar diagram

Choose the correct answer from the alternatives given :
Directions for questions

$71$ to

$75$ : Study the following graph carefully to answer these questions.
Production (in lakh tonnes) of six units of a company in

$2006$ and

$2007$ .
What is the difference in the production (in lakh tonnes) of all companies in

$2006$ and

$2007$ ?

0%
$45$
0%
$75$
0%
$100$
0%
$125$

Explanation

Total production of all companies in 2006

$\Rightarrow$

$90+7+ 100+95+85+80=525$
Total production of all companies in 2007

$\Rightarrow$

$110+60+110+100+ l05+85=570$
Required difference =

$570 - 525 =45$

Choose the correct answer from the alternatives given :
Directions for questions

$71$ to

$75$ : Study the following graph carefully to answer these questions.
Production (in lakh tonnes) of six units of a company in

$2006$ and

$2007$ .
What is the average production of all units (in lakh tonnes) for the year

$2007$ ?

0%
$95$
0%
$92$
0%
$87$
0%
$93$

Explanation

Average production of year

$2007$

$\frac{110+60+110+100+105+85}{6} =\frac{570}{6} = 95$

If the vertices of a triangle are

$(a,1),(b,3)$ and

$(4,c)$ , then the centroid of the triangle will lie on x-axis, if:

0%
$c = -4$
0%
$a+b+c = 0$
0%
$a= -2$
0%
$b= -4$

All the points lying inside the triangle formed by the points

$(0,4),(2,5)$ and

$(6,2)$ satisfy

0%
$3x+2y+8 > 0$
0%
$2x+y-10 > 0$
0%
$2x-3y-11 > 0$
0%
$-2x+y-3 > 0$

The following bar graph (Fig.) represents the heights (in cm) of 50 students of Class XI of a particular school. Study the graph and answer the following questions:
State whether true or false:
There are 9 students in the class whose heights are in the range of 155-159 cm.

0%
True
0%
False

$35\%$ of the people residing in a locality are Sikhs then the central angle of the sector representing the Sikh community in the pie chart would be

0%
$108^\circ$
0%
$115^\circ$
0%
$126^\circ$
0%
$135^\circ$

Explanation

We know that the total people residing in locality

$= 100\%$

Sikh people residing in the same locality

$= 35\%$

By using the formula,

Central angle of component = ((value of the component ) / Total value)

$\times 360^\circ$

$= \left(\dfrac{35} { 100}\right) \times 360^\circ$

$= 126^\circ$

Data was collected on a student's typing rate and graph was drawn as shown below. Approximately how many words had this student typed in

$30$ seconds?

0%
$20$
0%
$24$
0%
$28$
0%
$34$

Explanation

The correct answer is option (c). approximately

$28$ words were typed in

$30$ seconds.

In a bar graph, the width of bars may be unequal.

0%
True
0%
False

A line graph can also be a whole unbroken line.

0%
True
0%
False

For fixing a point on the graph sheet we need two coordinates.

0%
True
0%
False

The y-coordinate of any point lying on the x-axis will be zero.

0%
True
0%
False

Explanation

The given statement is true.

The

$y$ coordinate is basically the distance of the point from

$x$ axis. Since, the point itself lies on the

$x$ axis, the distance from the

$x$ axis and hence, the

$y$ coordinate will be 0.

Any point on

$x$ axis is written as

$(a,0)$ , where

$a$ is

$x$ -coordinate.

That point is called where

$X X$ and

$Y^{\prime} Y$ cuts each other

0%
Co-ordinate
0%
Origin
0%
Vertical
0%
Horizontal line

A rectangle ABCD is inscribed in the circle

$x^2 + y^2 + 3x + 12y + 2 = 0$ . If the co-ordinates of A and B are

$(3, -2)$ and

$(-2, 0)$ , then the other two vertices of the rectangle are

0%
$(-6, -10)$
0%
$(-1, -12)$
0%
$(1, 12)$
0%
$(6, 10)$

Tangents are drawn to the circle

$x^2+y^2=50$ from a point 'P' lying on the x-axis.These tangents meet the y-axis at points

$'P_1'\, and |, 'P_2'$ .Possible coordinates of 'P' so that area of triangle

$PP_1+2$ is minimum, is / are

0%
(10,0)
0%
$(10\sqrt{2},0)$
0%
(-10,0)
0%
$(-10\sqrt{2},0)$

The abscissae of two points

$A \text { and } B$ are the roots of the equation

$x ^ { 2 } + 2 a x - b ^ { 2 } = 0$ ,and their coordinates are the roots of the equation

$x ^ { 2 } + 2 p x - q ^ { 2 } = 0$ .Then the radius of the circle with

$A B$ as diameter is

0%
$\sqrt { a ^ { 2 } + p ^ { 2 } }$
0%
$\sqrt { b ^ { 2 } + q ^ { 2 } }$
0%
$\sqrt { a ^ { 2 } + b ^ { 2 } }$
0%
$\sqrt { a ^ { 2 } + b ^ { 2 } + p ^ { 2 } + q ^ { 2 } }$

Three normal

$AA_1$ ,

$BB_1$ and

$CC_1$ are drawn from a point P(h, k) to the parabola

$y^2=4ax$ , at A, B and C points. The following conditions are satisfied by the three normals.

(i) any two of three normals are coincide

(ii) S(a,

$0$ ) be the focus of the parabola

(iii) Three normals be real, then

$h > 2a$

(iv) Slopes of the normals are

$m_1, m_2$ and

$m_3$ . If

$m_1m_2=\lambda$ , then the locus of P is a parabola

(v) P lies on the line

$y=\mu$ , then the sides of the triangle ABC touch the parabola

$S'=0$ .

SA SB SC is equal to.

0%
$a(SP)^2$
0%
$2a(SP)^2$
0%
$(aSP)^2$
0%
$4a(SP)^2$

CBSE Questions for Class 8 Maths Introduction To Graphs Quiz 5 - MCQExams.com

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Practice Class 8 Maths Quiz Questions and Answers

CBSE Questions for Class 8 Maths Introduction To Graphs Quiz 5 - MCQExams.com

0:0:1

Practice Class 8 Maths Quiz Questions and Answers

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